Most software does. Unless you're a content creator almost everyone is exclusively using a browser. Chrome is the #1 browser and it saturates 8 threads easy. Clock an 8 core to it's lowest and check CPU utilization.
Chrome's display renderer is multithreaded but that's only a part of the process. Javascript is single threaded. So you will get some parallelism but nothing of the sort where 8 threads (or even 4 really) would be fully loaded.
Now if Windows 10's spyware hogs up a core, well that could be a problem.
And it looks like CNL Y STILL exists
https://twitter.com/TUM_APISAK/status/996706570552524800?s=19
Ooh, interesting, although with no GPU that would be kind of silly.